LineageOS/android_external_libcxx
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Refactor pthread usage of libcxx.

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This patch extracts out all the pthread dependencies of libcxx into the
new header __threading_support. The motivation is to make it easy to
re-target libcxx into platforms that do not support pthread.

Original patch from Fulvio Esposito (fulvio.esposito@outlook.com) - D11781

Applied with tweaks - D19412

Change-Id: I301111f0075de93dd8129416e06babc195aa936b

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@268734 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Asiri Rathnayake
2016-05-06 14:06:29 +00:00
parent 6637dc23f6
commit 35ff03b7c2
10 changed files with 299 additions and 105 deletions
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6
src/algorithm.cpp
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@@ -48,14 +48,14 @@ template bool __insertion_sort_incomplete<__less<long double>&, long double*>(lo
template unsigned __sort5<__less<long double>&, long double*>(long double*, long double*, long double*, long double*, long double*, __less<long double>&);
#ifndef _LIBCPP_HAS_NO_THREADS
static pthread_mutex_t __rs_mut = PTHREAD_MUTEX_INITIALIZER;
static __libcpp_mutex_t __rs_mut = _LIBCPP_MUTEX_INITIALIZER;
#endif
unsigned __rs_default::__c_ = 0;
__rs_default::__rs_default()
{
#ifndef _LIBCPP_HAS_NO_THREADS
pthread_mutex_lock(&__rs_mut);
__libcpp_mutex_lock(&__rs_mut);
#endif
__c_ = 1;
}
@@ -69,7 +69,7 @@ __rs_default::~__rs_default()
{
#ifndef _LIBCPP_HAS_NO_THREADS
if (--__c_ == 0)
pthread_mutex_unlock(&__rs_mut);
__libcpp_mutex_unlock(&__rs_mut);
#else
--__c_;
#endif